33472891 has 2 divisors, whose sum is σ = 33472892. Its totient is φ = 33472890.

The previous prime is 33472849. The next prime is 33472903. The reversal of 33472891 is 19827433.

It is a strong prime.

It is an emirp because it is prime and its reverse (19827433) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33472891 - 2¹⁵ = 33440123 is a prime.

It is a super-2 number, since 2×33472891² = 2240868863795762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33472891.

It is not a weakly prime, because it can be changed into another prime (33422891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16736445 + 16736446.

It is an arithmetic number, because the mean of its divisors is an integer number (16736446).

Almost surely, 2^33472891 is an apocalyptic number.

33472891 is a deficient number, since it is larger than the sum of its proper divisors (1).

33472891 is an equidigital number, since it uses as much as digits as its factorization.

33472891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 33472891 is about 5785.5761165160. The cubic root of 33472891 is about 322.2783076680.

The spelling of 33472891 in words is "thirty-three million, four hundred seventy-two thousand, eight hundred ninety-one".